National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
CXUS55 KRIW 021045
CLMRIW

CYSCLMRIW 000
TTAA00 KRIW 020835


CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
233 AM MDT SUN JUN 2 2013

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR RIVERTON REGIONAL AIRPORT
FOR THE MONTH OF MAY 2013...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF MAY 2013 WILL BE
AVAILABLE APPROXIMATELY IN JULY 2013 FROM THE NATIONAL CLIMATIC
DATA CENTER (HTTP://WWW.NCDC.NOAA.GOV/OL/CLIMATEDATA.HTML).
UNOFFICIAL ASOS DAILY SUMMARIES ARE AVAILABLE ON THE INTERNET AT
HTTP://WWW.CRH.NOAA.GOV/RIW/CLIMATE/...

...MAY WAS SLIGHTLY WARMER AND DRIER THAN NORMAL FOR RIVERTON...

THE AVERAGE TEMPERATURE FOR RIVERTON IN MAY WAS 56.4 DEGREES...WHICH
WAS 2.6 DEGREES ABOVE NORMAL. THE WARMEST READING FOR THE MONTH WAS
87 DEGREES ON THE 13TH...BREAKING THE PREVIOUS RECORD OF 86
DEGREES...SET IN 2001. ANOTHER RECORD HIGH OF 86 DEGREES ON THE
14TH...BROKE THE PREVIOUS RECORD OF 81 DEGREES...ALSO SET IN 2001.
THE COLDEST READING FOR THE MONTH WAS 23 DEGREES ON THE 2ND.

TOTAL PRECIPITATION FOR THE MONTH WAS 1.38 OF AN INCH. THIS WAS 80
PERCENT OF NORMAL. THE WETTEST DAY OF THE MONTH WAS THE 19TH...WHEN
0.68 OF AN INCH OF PRECIPITATION FELL. 0.31 OF AN INCH OF
PRECIPITATION ON THE 1ST...BROKE THE PREVIOUS RECORD OF 0.28 SET IN
2002. DURING THE MONTH...2.4 INCHES OF SNOW FELL. THE HIGHEST WIND
GUST WAS 62 MPH...WHICH OCCURRED ON THE 16TH.

...THE RIVERTON WY CLIMATE SUMMARY FOR THE MONTH OF MAY 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1995 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              93   05/29/2003
 LOW               19   05/09/2002
HIGHEST            87   05/13
LOWEST             23   05/02
AVG. MAXIMUM     69.5              67.2     2.3
AVG. MINIMUM     43.3              40.5     2.8
MEAN             56.4              53.8     2.6
DAYS MAX >= 90      0
DAYS MAX <= 32      0
DAYS MIN <= 32      3
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.32   2011
 MINIMUM         0.18   2006
TOTALS           1.38              1.72   -0.34
DAILY AVG.       0.04              0.06   -0.02
DAYS >= .01         9
DAYS >= .10         3
DAYS >= .50         1
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.68   05/19 TO 05/19


SNOWFALL (INCHES)
TOTALS            2.4                MM      MM
SINCE 7/1        38.2                MM      MM
SNOWDEPTH AVG.      0
DAYS >= 1.0         1

DEGREE_DAYS
HEATING TOTAL     273               355     -82
 SINCE 7/1       7483              7751    -268
COOLING TOTAL      13                 9       4
 SINCE 1/1         13                 9       4
.................................................

WIND (MPH)
AVERAGE WIND SPEED              9.7
RESULTANT WIND SPEED/DIRECTION   4/332
HIGHEST WIND SPEED/DIRECTION    49/270    DATE  05/16
HIGHEST GUST SPEED/DIRECTION    62/260    DATE  05/16

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           22
NUMBER OF DAYS PC              6
NUMBER OF DAYS CLOUDY          3

AVERAGE RH (PERCENT)     49

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN                9     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                1     SLEET                      0
FOG                       3     FOG W/VIS <= 1/4 MILE      1
HAZE                      1

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

LOOKING AHEAD TO JUNE 2013...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 73 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 42 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 87
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 50. THE AVERAGE MONTHLY
PRECIPITATION IS 1.26 INCHES...WITH 0.2 INCHES OF SNOW.

$$